latest, now, on former American P.O.W. Bowe bergdahl and the deal with the Taliban that brought him home. Chuck Hagel will be in the hot seat today. The target of krits who say bergdahl's swap will make America less safe. Martha Raddatz covering the controversy from Washington. Good morning, Martha. Reporter: Three, key questions on the hill. Did bergdahl walk away willingly? How can we be sure that the Taliban leaders release won't return to the battlefield? And why didn't the administration tell congress about the deal? This morning, chuck Hagel faces heavy fire, for handing over five Taliban leaders from guantanamo bay, in exchange for sergeant Bowe bergdahl. There's going to be cost, lost lives associated with what came out of this. Reporter: Secretary Hagel, a Vietnam veteran and president Obama himself, have staunchly defended the decision to bring bergdahl home, despite the controversy over his disappearance. We still get an American soldier back if he's held in captivity. Period. Reporter: Hagel will be answering to a house panel, still furious about not being notified the swap was happening. The administration, saying Bowe bergdahl's health was a concern. And citing fears the deal may get leaked. Only very, very few people knew about this operation. Reporter: But the administration acknowledged in a classified hill briefing, that 80 to 90 people knew about the deal. And it's not just republicans upset with the exchange. It's still a bad deal. I can't explain it back home to my fellow west virginians. Reporter: And it appears many Americans agree with that. A new ABC news/"washington post" poll shows more Americans disapprove of the swap than approve. George? Martha, thanks. Now, let's go to Cecilia

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